As a fast electronic manufacturer,JLCPCB SMT service fulfills customers' money&time saving needs.

On JLCPCB one-stop online platform, customers enjoy low-cost&high-quality&fast SMT service at $8.00 setup fee($0.0017 per joint). At the same time they assemble electronic products from PCB design to PCBA products on the same online platform; and track their electronic manufacturing process in real time, witness 24-hours SMT build time, and fast delivery.

Thousands of components supported by JLCPCB and its reliable component partners, like DigiKey and Mouser. This benefits customers to source components much faster and easier, bringing you a shorter PCBA production time.

With 16-year PCB manufacturing experience,JLCPCB also establishes a well-trained engineer&customer support team devoted to ensuring PCBA assembly service faster and cheaper, to ensure assemble your PCB in best service

Related Sites:


The bq76PL455A-Q1 device is an integrated 16-cell battery monitoring and protection device, designed for high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A-Q1 devices to communicate with a host via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface. The bq76PL455A-Q1 monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication faults. Six GPIO ports as well as eight analog AUX ADC inputs are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection. The bq76PL455A-Q1 has features that user may find useful to help them meet functional safety standard requirements.

BQ Chip Features


• Monitors and Balances 6-to-16 Cells per Device

• Highly Accurate Monitoring

– High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference

– All Cells Converted in 2.4 ms (Nominal)

– Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V

– Internal Precision Reference

• Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable VCELL Set Points

• Engineered for High System Robustness

– Up to 1-Mb/s Stackable Isolated Differential-UART

– Up to 16 ICs in Daisy-Chain With Twisted Pair

– Passes Bulk Current Injection (BCI) Test

– Designed for Robust Hot-Plug Performance

• Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q

• Can Help Customers Meet Functional Safety Standard Requirements (For Example, ISO26262)

– Built-in Self-Tests to Validate Defined Internal Functions

– Support for Open Wire Detection


• Electric and Hybrid Electric Vehicles (EV, HEV, PHEV, Mild Hybrid)

• 48-V Systems (Single-Chip Solution)

• Energy Storage (ESS) and UPS

• E-Bikes, E-Scooters


PCB Layout

3D Model

How to Order PCBs From JLCPCB

Now we have got the PCB design and it’s time to order the PCBs. For that, you just have to go to JLCPCB and click on the “QUOTE NOW” button. JLCPCB is also a sponsor of this project. JLCPCB (ShenzhenJLC Electronics Co., Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production. You can order a minimum of 5 PCBs for just $2. To get the PCB manufactured, upload the Gerber file you downloaded in the last step. Upload file or you can also drag and drop the Gerber files.

After uploading the zip file, you’ll see a success message at the bottom of the file that is successfully uploaded. You can review the PCB in the Gerber viewer to make sure everything is good. You can view both the top and bottom of the PCB. After making sure our PCB looks good, we can now place the order at a reasonable price. You can order 5 PCBs for just $2 but if it’s your first order then you can get 10 PCBs for $2. To place the order, click on the “SAVE TO CART” button. My PCBs took 2 days to get manufactured and arrived within a week using the DHL delivery option. PCBs were well packed and the quality was really good.

200k+ in-stock Quality Parts Saving Money and Time

JLCPCB SMT Parts Library 200k+ in-stock components (689 Basic components and 200k+ Extended components)

Parts Pre-Order service

Build Personal library Inventory ,save parts for now or the future

Assembly will support 10M+ parts from Digikey, mouser, 

Low Price and Fast delivery Saving Money and Time

$27 New User coupon & $24 SMT coupons every month

$8.00 setup fee, and $0.0017 per joint

 Get PCBA products in one week, from ordering, parts sourcing and PCBA prototyping

Easier&faster ordering Saving Money and Time

 one-stop service from PCB design and PCB prototype to PCB assembly to PCB enclosures,

Free PCB design software, cheap PCB prototype, fast&low cost SMT service saving your electronic products costs 2018464985.1622645718

Capability (quality)

JLCPCB Inspection (high-tech facility ) 

Visual Inspection- X-Ray- Solder paste Inspection (SPI)-AOI

Q1: What is the real purpose of setting SPI?

A1: It should be to check in advance whether there is a lack of poor solder paste printing.

Q2: What is poor solder paste printing?

A2: The amount of solder paste printed is too much or too little.

Q3: What problems will be caused by printing too much or too little solder paste?

A3: Too much solder paste printing will cause solder short circuits, and too little solder paste printing will cause empty soldering. 

AOI surface of the object can be checked correctly (but for objects hidden under the part or on the edge of the part) The solder joints may be out of reach) 

X-ray is used to check the quality of the solder joints (such as BGA) under the components on the line to ensure that the circuit board can achieve 100% test coverage.

JLC Soldering Types:


Reflow Soldering  

Wave Soldering 

3.Soldering Method

4. First-class SMT production line

Equipment and Environmental Management

Adopt advanced Yamaha automatic placement machine

And all equipped with electric feeder, 10 temperature zone lead-free reflow soldering, automatic printing machine

SMT production line sorting, rectification, cleaning, literacy and production line discipline management

How to show JLC-SMT?(suggestions)

SMT board evaluation (SNS: youtube IG FB TW)Product packaging, appearance, performance, usage(comparison of competing products, comparison of different batches of orders)

Followers secondary sharing call out

PCB project/PCB design collaborators



Non-DIY project video advertising partners (fast delivery/ low price and component kinds, liable component suppliers: Digikey/mouser)

Complementary information for JLC SMT

How do customers choose SMT manufacturers?(Hand soldering pain point: wait too long, difficult to paste small components)

•Technology: software/hardware(equipment) technology

•Quality: product and quality control

•Response: support team responds to inquiries and complaints promptly and correctly

• Delivery:lead-time and delivery date.

•Cost (price) reasonable / low.

• Environment: a heart for the environment